package co.com.umobile.network;

import java.io.IOException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.net.UnknownHostException;

import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocket;
import javax.net.ssl.TrustManager;

import org.apache.http.conn.ConnectTimeoutException;
import org.apache.http.conn.scheme.LayeredSocketFactory;
import org.apache.http.conn.scheme.SocketFactory;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;

/**
 * This socket factory will create SSL socket that accepts self signed
 * certificate.
 * 
 * @author Apache.
 */
public class SSLSocketFactory implements SocketFactory, LayeredSocketFactory {

	/** SSL context. */
	private SSLContext sslcontext = null;

	/**
	 * Create SSL Context.
	 * 
	 * @return {@link SSLContext}.
	 * @throws IOException
	 *             Error.
	 */
	private static SSLContext createSSLContext() throws IOException {
		try {
			SSLContext context = SSLContext.getInstance("TLS");
			context.init(null,
					new TrustManager[] { new SSFTrustManager(null) }, null);
			return context;
		} catch (Exception e) {
			throw new IOException(e.getMessage());
		}
	}

	/**
	 * Get SSL Context.
	 * 
	 * @return {@link SSLContext}.
	 * @throws IOException
	 *             Exception.
	 */
	private SSLContext getSSLContext() throws IOException {
		if (this.sslcontext == null) {
			this.sslcontext = createSSLContext();
		}
		return this.sslcontext;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * org.apache.http.conn.scheme.SocketFactory#connectSocket(java.net.Socket,
	 * java.lang.String, int, java.net.InetAddress, int,
	 * org.apache.http.params.HttpParams)
	 */
	public Socket connectSocket(Socket sock, String host, int port,
			InetAddress localAddress, int localPort, HttpParams params)
			throws IOException, UnknownHostException, ConnectTimeoutException {
		int connTimeout = HttpConnectionParams.getConnectionTimeout(params);
		int soTimeout = HttpConnectionParams.getSoTimeout(params);
		InetSocketAddress remoteAddress = new InetSocketAddress(host, port);
		SSLSocket sslsock = (SSLSocket) ((sock != null) ? sock : createSocket());

		if ((localAddress != null) || (localPort > 0)) {
			// we need to bind explicitly
			if (localPort < 0) {
				localPort = 0; // indicates "any"
			}
			InetSocketAddress isa = new InetSocketAddress(localAddress,
					localPort);
			sslsock.bind(isa);
		}

		sslsock.connect(remoteAddress, connTimeout);
		sslsock.setSoTimeout(soTimeout);
		return sslsock;

	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.apache.http.conn.scheme.SocketFactory#createSocket()
	 */
	public Socket createSocket() throws IOException {
		return getSSLContext().getSocketFactory().createSocket();
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.apache.http.conn.scheme.SocketFactory#isSecure(java.net.Socket)
	 */
	public boolean isSecure(Socket socket) throws IllegalArgumentException {
		return true;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * org.apache.http.conn.scheme.LayeredSocketFactory#createSocket(java.net
	 * .Socket, java.lang.String, int, boolean)
	 */
	public Socket createSocket(Socket socket, String host, int port,
			boolean autoClose) throws IOException, UnknownHostException {
		return getSSLContext().getSocketFactory().createSocket(socket, host,
				port, autoClose);
	}

	// -------------------------------------------------------------------
	// javadoc in org.apache.http.conn.scheme.SocketFactory says :
	// Both Object.equals() and Object.hashCode() must be overridden
	// for the correct operation of some connection managers
	// -------------------------------------------------------------------
	/*
	 * (non-Javadoc)
	 * 
	 * @see java.lang.Object#equals(java.lang.Object)
	 */
	public boolean equals(Object obj) {
		return ((obj != null) && obj.getClass().equals(SSLSocketFactory.class));
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see java.lang.Object#hashCode()
	 */
	public int hashCode() {
		return SSLSocketFactory.class.hashCode();
	}

}